This fine bit of work from God of War series concept artist Cecil Kim depicts the mighty Fire Titan, displaying the epic scale Sony is aiming for with God of War III.
At Cecil Kim's website you'll find tons of concept art for God of War and God of War II, along with a few choice pieces from the third game in the series, such as this one we have here, depicting the massive Fire Titan. The caption beneath the picture reads, "Fire Titan battles against Zeus and his allies," which really doesn't mean all that much. The really interesting bit is up in the top right corner of the picture, where we see the tiny silhouette of Kratos, displaying just how titanic the Titans really are. How Cecil's concept translates into the final game remains to be see, but it gives us a good indicator of what they're shooting for.
Be sure to check out Kim's other work, which includes a lovely bunch of artwork from Final Fantasy IX, my favorite of the PlayStation-era Final Fantasy games.